替换php中的空行

Question

How do I remove multiple blank lines from a string. I have looked at the examples on stackoverflow and have tried to change my code accordingly but I am not getting the right answer.

function removeMultipleBlankLines(&$array)
{
  $value = $array;
  $value = preg_replace("/(^[
]*|[
]+)[\s\t]*[
]+/", "
", $value);

  return $value;
}

  $textarray=array("The red","big","  ","  ","fox","is ready","","","to jump.");

  echo print_r(removeMultipleBlankLines($textarray));

Answer 1

You can do:

$array_with_nonblank_lines = array_filter($textarray, 'trim');

to get exactly what you want.

Here is link to php's docs page about trim function, which does the job.